CN114211726A - Foaming extrusion die - Google Patents

Foaming extrusion die Download PDF

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Publication number
CN114211726A
CN114211726A CN202111536915.0A CN202111536915A CN114211726A CN 114211726 A CN114211726 A CN 114211726A CN 202111536915 A CN202111536915 A CN 202111536915A CN 114211726 A CN114211726 A CN 114211726A
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China
Prior art keywords
die body
foaming
die
plate
connecting rod
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CN202111536915.0A
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Chinese (zh)
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CN114211726B (en
Inventor
方海峰
戎铮
曹晋
孙撼林
吴群彪
王振
董硕
李琛
蔡李花
梁涛
李洋
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Jiangsu University of Science and Technology
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Jiangsu University of Science and Technology
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Priority to CN202111536915.0A priority Critical patent/CN114211726B/en
Publication of CN114211726A publication Critical patent/CN114211726A/en
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Publication of CN114211726B publication Critical patent/CN114211726B/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/30—Extrusion nozzles or dies
    • B29C48/305—Extrusion nozzles or dies having a wide opening, e.g. for forming sheets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/78—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling
    • B29C48/86—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling at the nozzle zone
    • B29C48/87—Cooling
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Molding Of Porous Articles (AREA)

Abstract

The invention provides a foaming extrusion die, wherein a die main body comprises an upper die body and a lower die body which are oppositely arranged up and down, and the upper die body and the lower die body are fastened and connected through a plurality of first bolts; the upper die body can slide from one end of the lower die body to the other end along the matching surfaces; the die orifice extrusion assembly is arranged on the discharge port; the die orifice extrusion assembly comprises a mixing plate, a flow distribution plate, a sealing copper ring, a foaming plate and a front cover plate which are sequentially arranged along the material outflow direction; the mixing plate, the flow distribution plate, the sealing copper ring and the foaming plate are sequentially stacked and then are tightly pressed on the discharge hole through the front cover plate, and the front cover plate is provided with a through hole corresponding to the discharge hole; the front cover plate is fixedly connected with the end surface of the upper die body and the end surface of the lower die body through a plurality of second bolts; the mold locking mechanism comprises two locking units which are respectively arranged at two sides of the mold main body.

Description

Foaming extrusion die
Technical Field
The invention relates to the technical field of polymer microcellular foaming, in particular to a foaming extrusion die.
Background
Microcellular foaming means that the diameter of cells of the foaming material is in the order of 10 mu m, and the density of the cells is 10 larger8cells/cm3The size of the foam hole is far smaller than the original defect in the material, the existence of the foam hole can not reduce the strength of the material, but can passivate the tip of the original crack, so that the crack can be prevented from continuously expanding under the action of stress, and meanwhile, the material of the microporous foam material has excellent shock resistance due to the compact foam hole structure of the microporous foam material. And the heat insulation and sound insulation material has good heat insulation and sound insulation performance, and is widely applied to the fields of buildings, ships, rail transit, wind power and the like.
However, because the microcellular foaming process is performed in a high-temperature and high-pressure environment, the foaming process is performed in the presence of PET and supercritical CO2In the continuous extrusion process, the pressure in the die is up to 25MPa, the temperature is up to 250 ℃, and the material is easy to flow out along the gap of the die, so that the pressure in the die is unstable and the material is wasted; secondly, the density and distribution uniformity of the foam cells in the continuous extrusion microcellular foaming process are extremely difficult to control, so that the size and density distribution of the foam cells are uneven, and the mechanical property of the foamed sheet is reduced. Therefore, the mold structure needs to be optimally designed.
Disclosure of Invention
The invention aims to provide a foaming extrusion die, which solves the problems of uneven pressure distribution in a die and material waste caused by the fact that materials flow out along a die gap in the continuous extrusion micropore foaming process, improves the uniformity of the size and density distribution of foam holes in the continuous extrusion process, and improves the mechanical performance of extruded plates.
In order to achieve the purpose, the invention provides a foaming extrusion die which comprises a die main body, a die orifice extrusion assembly and a die locking mechanism, wherein a material flow passage for material flowing is arranged in the die main body in a penetrating manner, one end of the material flow passage is an injection port connected with injection equipment, and the other end of the material flow passage is a discharge port; wherein the content of the first and second substances,
the die main body comprises an upper die body and a lower die body which are arranged oppositely up and down, and the upper die body and the lower die body are fastened and connected through a plurality of first bolts; the upper die body and the lower die body are provided with matched surfaces which are matched with each other and in a wedge-shaped step shape, and the upper die body can slide from one end of the lower die body to the other end along the matched surfaces;
the die orifice extrusion assembly is arranged on the discharge port; the die orifice extrusion assembly comprises a mixing plate, a flow distribution plate, a sealing copper ring, a foaming plate and a front cover plate which are sequentially arranged along the material outflow direction; the mixing plate, the flow distribution plate, the sealing copper ring and the foaming plate are sequentially stacked and then are tightly pressed on the discharge hole through the front cover plate, and the front cover plate is provided with a through hole corresponding to the discharge hole; the front cover plate is fixedly connected with the end surface of the upper die body and the end surface of the lower die body through a plurality of second bolts;
the mould locking mechanism comprises two locking units which are respectively arranged on two sides of the mould main body, and the locking units lock the upper mould body and the lower mould body in the vertical direction.
Further, the hybrid board includes that first square frame and polylith are followed first square frame length direction installs twist plate in the first square frame, polylith twist plate is followed first square frame width direction interval sets up.
Further, the flow distribution plate comprises a second square frame and a plurality of blocks, wherein the second square frame is installed in the length direction of the second square frame, and the plurality of blocks are arranged at intervals in the width direction of the second square frame.
Furthermore, a plurality of foaming holes which are arranged in a penetrating way are uniformly distributed on the foaming plate;
a round chamfer is arranged on one feeding side of the foaming hole, and a square chamfer is arranged on one discharging side of the foaming hole.
Further, the angle of the round chamfer is 120 degrees.
Furthermore, the locking unit comprises a first connecting rod and a second connecting rod, one end of the first connecting rod is rotatably connected with the lower die body through a first pin shaft, a connecting part is further arranged at the end, connected with the lower die body, of the first connecting rod, the connecting part is rotatably connected with one end of the second connecting rod through a second pin shaft, and the other end of the second connecting rod is rotatably connected with the upper die body through a third pin shaft;
the first pin shaft is fixedly connected with the side wall of the lower die body, and the third pin shaft is fixedly connected with the side wall of the upper die body;
the first connecting rod is pushed to one end close to the injection port, and the second connecting rod can drive the upper die body and the lower die body to slide and separate;
and when the first pin shaft, the second pin shaft and the third pin shaft are positioned on the same straight line, the locking unit is in a locking state.
Further, the first bolt is inserted from the upper surface of the upper die body, penetrates out from the lower surface of the lower die body and is fixed through a nut;
a spring gasket is arranged between the first bolt and the upper surface of the upper die body in a cushioning mode; and a butterfly-shaped gasket is padded between the nut and the lower surface of the lower die body.
Furthermore, a plurality of cooling flow channels are arranged in the upper die body and the lower die body in a penetrating manner;
the water inlet of the cooling runner is close to one end of the discharge hole, and the water outlet of the cooling runner is close to one end of the injection hole.
Further, the injection port is a circular port.
Further, the discharge hole is a rectangular hole.
The foaming extrusion die provided by the invention effectively improves the tightness of the die, solves the problem of material leakage in the extrusion process, and simultaneously improves the uniformity of the foam density and the size distribution of the foam holes of the extruded foaming plate. For production enterprises, the foaming extrusion die provided by the invention reduces the investment of manpower and material resources, prevents material leakage, effectively saves the investment of raw materials, and directly improves the economic benefit for the enterprises due to the improvement of the product quality.
Drawings
Fig. 1 is a schematic structural diagram of a foaming extrusion die according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a foaming extrusion die according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram three of a foaming extrusion die according to an embodiment of the present invention;
fig. 4 is a first schematic view of a matching structure of an upper mold body and a lower mold body of a foaming extrusion mold according to an embodiment of the present invention;
fig. 5 is a schematic view of a matching structure of an upper mold body and a lower mold body of a foaming extrusion mold according to an embodiment of the present invention;
FIG. 6 is an enlarged schematic view of the structure at A in FIG. 5;
fig. 7 is a schematic view illustrating installation of a first bolt in a foaming extrusion die according to an embodiment of the present invention;
FIG. 8 is a schematic view of the installation of a spring washer and a disc washer provided in the embodiment of the present invention;
FIG. 9 is an exploded view of a die extrusion assembly provided in accordance with an embodiment of the present invention;
FIG. 10 is a schematic structural diagram of a mixing plate according to an embodiment of the present invention;
fig. 11 is a schematic structural diagram of a flow distribution plate according to an embodiment of the present invention;
FIG. 12 is a schematic structural view of an outer side surface of a foam board according to an embodiment of the present invention;
FIG. 13 is a schematic structural view of the inner side of a foam board provided in an embodiment of the present invention;
FIG. 14 is a cross-sectional view of a foam cell of a foam board provided in accordance with an embodiment of the present invention;
fig. 15 is a schematic structural diagram of a front cover plate according to an embodiment of the present invention;
FIG. 16 is a schematic view of an installation structure of a mold locking mechanism according to an embodiment of the present invention;
fig. 17 is an exploded view of a locking unit provided in an embodiment of the present invention;
fig. 18 is a schematic diagram of a mold opening process according to an embodiment of the present invention.
Detailed Description
The following describes in more detail embodiments of the present invention with reference to the schematic drawings. The advantages and features of the present invention will become more apparent from the following description. It is to be noted that the drawings are in a very simplified form and are not to precise scale, which is merely for the purpose of facilitating and distinctly claiming the embodiments of the present invention.
As shown in fig. 1 to 3, the present embodiment provides a foaming extrusion die, which includes a die main body 100, a die orifice extrusion assembly 200, and a die locking mechanism 300.
Specifically, as shown in fig. 4, a material flow passage 400 for flowing a material is disposed through the mold main body 100, one end of the material flow passage 400 is an injection port 401 connected to an injection device, and the other end of the material flow passage 400 is an discharge port 402. A plurality of cooling channels 108 are arranged in the upper die body 102 and the lower die body 101 in a penetrating manner, a water inlet of each cooling channel 108 is arranged near one end of the discharge port 402, and a water outlet of each cooling channel 108 is arranged near one end of the injection port 401. The coolant flows into the cooling flow channel 108 from the inlet of the cooling flow channel 108, flows out of the cooling flow channel 108, and cools the upper mold 102 and the lower mold 101 by circulating the coolant in the cooling flow channel 108.
In this embodiment, the injection port 401 is a circular port, and the mold body 100 is connected to the injection port by boltsThe double-screw extruder is connected, the injection port 401 is communicated with the inside of the double-screw extruder, and the PET and the supercritical CO are2The composed homogeneous solution flows into the material flow passage 400 through the twin-screw extruder, and the processes of cooling and pressure buildup are performed in the material flow passage 400. In this embodiment, the discharge port 402 is a rectangular port.
In this embodiment, as shown in fig. 4 to 8, the mold main body 100 includes an upper mold body 102 and a lower mold body 101 which are disposed opposite to each other in an up-down direction, and the upper mold body 102 and the lower mold body 101 are fastened and connected by a plurality of first bolts 103; mating surfaces 107 which are matched with each other and have a wedge-shaped step shape are provided on both the contact surface of the upper die body 102 and the contact surface of the lower die body 101, and the upper die body 102 can slide from one end to the other end of the lower die body 101 along the mating surfaces 107.
The upper die body 102 and the lower die body 101 are tightly matched through the matching surface 107, so that the material is prevented from leaking out from the side surface under high temperature and high pressure in the extrusion process, and the displacement of the die in the vertical direction can be limited. The first bolt 103 is inserted from the upper surface of the upper mold 102, and is fixed by a nut 106 after passing through the lower surface of the lower mold 101. In this embodiment, the first bolt 103 may be an M16 × 270 bolt, and the nut 106 may be an M16 nut. A spring washer 104 is disposed between the first bolt 103 and the upper surface of the upper mold 102, and a butterfly washer 105 is disposed between the nut 106 and the lower surface of the lower mold 101 for increasing the locking force of the mold body 100 and preventing the first bolt 103 from being broken due to thermal deformation of the mold.
As shown in fig. 9, the die extrusion assembly 200 is mounted on a discharge gate 402. The die orifice extrusion assembly 200 comprises a mixing plate 205, a flow distribution plate 204, a sealing copper ring 203, a foaming plate 202 and a front cover plate 201 which are arranged in sequence along the material outflow direction. After the mixing plate 205, the flow distribution plate 204, the sealing copper ring 203 and the foaming plate 202 are sequentially stacked, the mixing plate 205 and the flow distribution plate 204 are pressed on the discharge port 402 through the front cover plate 201, the mixing plate 205 and the flow distribution plate 204 are arranged in the discharge port 402, and the front cover plate 201 is provided with a through hole corresponding to the discharge port 402. The front cover plate 201 is fixedly connected to the end surface of the upper mold 102 and the end surface of the lower mold 101 by a plurality of second bolts 206, and the second bolts 206 may be M16 × 40 screws. The front cover plate 201 is locked to the upper mold 102 and the lower mold 101 by the second bolt 206, so as to prevent the upper mold 102 and the lower mold 101 from sliding back and forth.
As shown in fig. 15, a groove is formed in the front cover plate 201, so that the foaming plate 202 and the copper sealing ring 203 can be limited and compressed, and the copper sealing ring 203 can effectively prevent the material from flowing out from a gap between the foaming plate 202 and the outer wall of the mold body 100.
As shown in fig. 10, the mixing plate 205 includes a first square frame 2051 and a plurality of twisted plates 2052 installed in the first square frame 2051 in the length direction of the first square frame 2051, the plurality of twisted plates 2052 being arranged at intervals in the width direction of the first square frame 2051. The inner wall of the discharge port 402 is provided with a limit boss corresponding to the first square frame 2051, and the first square frame 2051 abuts against the limit boss on the inner wall of the discharge port 402. Because of the presence of the cooling channels 108 in the mold body 100, PET and supercritical CO2The temperature of the homogeneous solution in the material channel 400 near the wall surface drops quickly, the temperature in the center of the material channel 400 drops slowly, the materials flow and mix up and down through the twisted plate 2052 in the mixing plate 205, heat exchange is performed, and the temperature of the homogeneous solution is balanced.
As shown in fig. 11, the splitter plate 204 includes a second square frame 2041 and a plurality of splitter plates 2042 installed in the second square frame 2041 along the length direction of the second square frame 2041, and the plurality of splitter plates 2042 are arranged at intervals along the width direction of the second square frame 2041. The copper sealing ring 203 is arranged between the outer wall of the second square frame 2041 and the outer wall of the mold body 100.
The partition plate 2042 divides the mixed homogeneous solution to stabilize the flow direction, and corresponds to the position of the foaming hole 2021 on the foaming plate 202, so that the material accumulation can be prevented while the division effect is achieved, and the flow stability is improved.
As shown in fig. 12-14, a plurality of foaming holes 2021, PET and supercritical CO, are uniformly distributed on the foaming plate 2022The homogeneous solution flows through the foaming hole 2021 for extrusion foaming. A round chamfer angle is arranged at the feeding side of the foaming hole 2021, the angle of the round chamfer angle is 120 degrees, the round chamfer angle is used for reducing material accumulation and increasing the shearing force between the material and the wall surface to promote CO2And (4) nucleating. A square chamfer is arranged on the discharging side of the foaming hole 2021. Hole-to-hole vertical distance andthe transverse distances are equal, so that the adhesiveness of the extruded foaming materials with different holes can be improved, and the uniformity of the cell density of the extruded foaming plate can be indirectly improved.
As shown in fig. 1, 2, 3, and 16, the mold locking mechanism 300 includes two locking units respectively disposed at both sides of the mold body 100, and the locking units lock the upper mold body 102 and the lower mold body 101 in a vertical direction.
Specifically, as shown in fig. 17, the locking unit includes a first connecting rod 301 and a second connecting rod 302, one end of the first connecting rod 301 is rotatably connected to the lower mold body 101 through a first pin 303, a connecting portion 306 is further disposed at one end of the first connecting rod 301 connected to the lower mold body 101, the connecting portion 306 is rotatably connected to one end of the second connecting rod 302 through a second pin 305, and the other end of the second connecting rod 302 is rotatably connected to the upper mold body 102 through a third pin 304. The first pin 303 is fixedly connected to the sidewall of the lower mold 101, and the third pin 304 is fixedly connected to the sidewall of the upper mold 102.
When the lower mold body 101 and the upper mold body 102 are closely matched in place, the mold locking mechanism 300 is used for connecting the second connecting rod 302 with the upper mold body 102 through the third pin shaft 304, the first connecting rod 301 is connected with the lower mold body 101 through the first pin shaft 303, then the first connecting rod 301 is pushed towards one end close to the front cover plate 201, so that the upper mold body 102 is tightly matched with the lower mold body 101, at the moment, the first pin shaft 303, the third pin shaft 304 and the second pin shaft 305 are positioned on the same straight line, and the locking unit is positioned at a dead point position, so that the mold can be effectively locked.
As shown in fig. 18, after the processing is finished, since the material is accumulated in the mold main body 100, the mold opening is difficult, and the mold locking mechanism 300 may be used to push the first link 301 toward the end near the injection port 401 so that the upper mold 102 and the lower mold 101 may be separated by sliding along the mating surface 107.
In conclusion, the foaming extrusion die provided by the embodiment effectively improves the tightness of the die, solves the problem of material leakage in the extrusion process, and simultaneously improves the uniformity of the foam density and the size distribution of the foam holes of the extruded foaming board. For production enterprises, the foaming extrusion die provided by the invention reduces the investment of manpower and material resources, prevents material leakage, effectively saves the investment of raw materials, and directly improves the economic benefit for the enterprises due to the improvement of the product quality.
The above description is only a preferred embodiment of the present invention, and does not limit the present invention in any way. It will be understood by those skilled in the art that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims (10)

1. The foaming extrusion die is characterized by comprising a die main body (100), a die orifice extrusion assembly (200) and a die locking mechanism (300), wherein a material flow channel (400) for material flow is arranged in the die main body (100) in a penetrating manner, one end of the material flow channel (400) is an injection port (401) connected with injection equipment, and the other end of the material flow channel (400) is a discharge port (402); wherein the content of the first and second substances,
the die main body (100) comprises an upper die body (102) and a lower die body (101) which are arranged oppositely up and down, and the upper die body (102) and the lower die body (101) are fixedly connected through a plurality of first bolts (103); matching surfaces (107) which are matched with each other and are in a wedge-shaped step shape are arranged on the contact surface of the upper die body (102) and the contact surface of the lower die body (101), and the upper die body (102) can slide from one end to the other end of the lower die body (101) along the matching surfaces (107);
the die orifice extrusion assembly (200) is mounted on the discharge port (402); the die orifice extrusion assembly (200) comprises a mixing plate (205), a flow distribution plate (204), a sealing copper ring (203), a foaming plate (202) and a front cover plate (201) which are sequentially arranged along the material outflow direction; the mixing plate (205), the flow distribution plate (204), the sealing copper ring (203) and the foaming plate (202) are sequentially stacked and then are tightly pressed on the discharge hole (402) through the front cover plate (201), and the front cover plate (201) is provided with a through hole corresponding to the discharge hole (402); the front cover plate (201) is fixedly connected with the end face of the upper die body (102) and the end face of the lower die body (101) through a plurality of second bolts (206);
the mold locking mechanism (300) comprises two locking units which are respectively arranged on two sides of the mold main body (100), and the locking units lock the upper mold body (102) and the lower mold body (101) in the vertical direction.
2. A foaming extrusion die as recited in claim 1, wherein: the mixing plate (205) comprises a first square frame (2051) and a plurality of twisting plates (2052) which are arranged in the first square frame (2051) along the length direction of the first square frame (2051), wherein the plurality of twisting plates (2052) are arranged at intervals along the width direction of the first square frame (2051).
3. A foaming extrusion die as recited in claim 1, wherein: the flow distribution plate (204) comprises a second square frame (2041) and a plurality of separation plates (2042) which are arranged in the second square frame (2041) in the length direction of the second square frame (2041), wherein the separation plates (2042) are arranged at intervals in the width direction of the second square frame (2041).
4. A foaming extrusion die as recited in claim 1, wherein: a plurality of foaming holes (2021) which are arranged in a penetrating way are uniformly distributed on the foaming plate (202);
a round chamfer is arranged on the feeding side of the foaming hole (2021), and a square chamfer is arranged on the discharging side of the foaming hole (2021).
5. A foaming extrusion die in accordance with claim 4 wherein: the angle of the round chamfer is 120 degrees.
6. A foaming extrusion die as recited in claim 1, wherein: the locking unit comprises a first connecting rod (301) and a second connecting rod (302), one end of the first connecting rod (301) is rotatably connected with the lower die body (101) through a first pin shaft (303), a connecting part (306) is further arranged at one end, connected with the lower die body (101), of the first connecting rod (301), the connecting part (306) is rotatably connected with one end of the second connecting rod (302) through a second pin shaft (305), and the other end of the second connecting rod (302) is rotatably connected with the upper die body (102) through a third pin shaft (304);
the first pin shaft (303) is fixedly connected with the side wall of the lower die body (101), and the third pin shaft (304) is fixedly connected with the side wall of the upper die body (102);
the first connecting rod (301) is pushed to one end close to the injection port (401), and the second connecting rod (302) can drive the upper die body (102) and the lower die body (101) to slide and separate;
the first connecting rod (301) is pushed towards one end far away from the material injection port (401), and when the first pin shaft (303), the second pin shaft (305) and the third pin shaft (304) are located on the same straight line, the locking unit is in a locking state.
7. A foaming extrusion die as recited in claim 1, wherein: the first bolt (103) is inserted from the upper surface of the upper die body (102), penetrates out from the lower surface of the lower die body (101) and is fixed through a nut (106);
a spring gasket (104) is arranged between the first bolt (103) and the upper surface of the upper die body (102) in a cushioning manner; a butterfly gasket (105) is padded between the nut (106) and the lower surface of the lower die body (101).
8. A foaming extrusion die as recited in claim 1, wherein: a plurality of cooling channels (108) are arranged in the upper die body (102) and the lower die body (101) in a penetrating manner;
the water inlet of cooling runner (108) is close to discharge gate (402) one end sets up, the delivery port of cooling runner (108) is close to sprue (401) one end sets up.
9. A foaming extrusion die as recited in claim 1, wherein: the injection port (401) is a circular port.
10. A foaming extrusion die as recited in claim 1, wherein: the discharge port (402) is a rectangular port.
CN202111536915.0A 2021-12-16 2021-12-16 Foaming extrusion die Active CN114211726B (en)

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Application Number Priority Date Filing Date Title
CN202111536915.0A CN114211726B (en) 2021-12-16 2021-12-16 Foaming extrusion die

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Application Number Priority Date Filing Date Title
CN202111536915.0A CN114211726B (en) 2021-12-16 2021-12-16 Foaming extrusion die

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CN114211726A true CN114211726A (en) 2022-03-22
CN114211726B CN114211726B (en) 2023-06-16

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115071094A (en) * 2022-07-04 2022-09-20 河南君铭环保科技有限公司 Extrusion device is used in extruded sheet production

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104057593A (en) * 2013-07-10 2014-09-24 苏州市富美森新材料有限公司 Extrusion die of PVC foam board
CN110587940A (en) * 2019-08-23 2019-12-20 合肥帝品数码科技有限公司 PVC foaming board extrusion tooling
CN211640912U (en) * 2019-12-25 2020-10-09 山东宜居新材料科技有限公司 Door leaf shaping extrusion tooling

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104057593A (en) * 2013-07-10 2014-09-24 苏州市富美森新材料有限公司 Extrusion die of PVC foam board
CN110587940A (en) * 2019-08-23 2019-12-20 合肥帝品数码科技有限公司 PVC foaming board extrusion tooling
CN211640912U (en) * 2019-12-25 2020-10-09 山东宜居新材料科技有限公司 Door leaf shaping extrusion tooling

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115071094A (en) * 2022-07-04 2022-09-20 河南君铭环保科技有限公司 Extrusion device is used in extruded sheet production
CN115071094B (en) * 2022-07-04 2024-07-16 河南君铭环保科技有限公司 Extrusion device for extruded sheet production

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